Machine for making vault-linings.



v I PATENTED. JAN. 31, 1905. F. O. ROBINSON & J. P. JAO0BY MAORI-NE FOR MAKING VAULT LIN-INGS. APPLICATION IILfiDIOV. 9. 1903. RENEWED SEPT. 9,1904.

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MACHINE FOR MAKING VAULT LININGS.

APPLICATION FILED NOV. 9, 1903. RENEWED SEPT. 9, 1904.

3 SHEETS-SHEET 2.

- No. 781,365.; PAT-ENTED JAM-31,1905. P. 0. ROBINSON & J. F. JAOOBY. v MACHINE FOR MAKING VAULT LININGS.

APPLICATION FILED HD1719, 1903. RENEWED SEPT. 9, 1904.

3 sums-41mm s.

2 5 on the line w of Fig. 1.

UNITED STATES.

' Patented January 31, 1905? PATENT O'FFIcE.

FREEMAN C. ROBINSON AND JOHN vF. JACOBY, OF' MINNEAPOLIS, MINNE- SOTA, ASSIGNORS TO AMERICAN BANK PROTECTION CO., OF MINNE- APOLIS, MINNESOTA, A CORPORATION.

MACHINE Fold MAKING VAULT-LININGS.

SPECIFICATION forming part of Letters Patent No. 781,365, dated January 31, 1905. Application filed November 9, 1903. Renewed September, 9, 1904. Serial No. 223,860.

machine wherein the metallic surface sheets and the core of insulating material can be easily and quickly secured together, the sheets '1 having been previously cut to thedesired shape and size.

The invention consists generally of various constructions and combinations, all as hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, formingpart of this specificatiomFigure ,1 is a plan view of a machine embodying our invention. Fig. 2 1s a side elevation.

on the line y y of Fig. 2.

In the drawings, 2 represents a suitable frame whereon the operating parts of the machine are supported, and 3 is a horizontal feedtable arranged at the receiving end of said frame. The sheets of which each vault-lining is composed are placed upon the table 3, having previously been coated by dipping or by a brush with shellac.

The linings are made in sections varying in form and size, according 'to the vault where used, and each lining-section consists of two metallic sheets, preferably of ordinary sheet metal of suitable weight, and an interposed 4 sheet of non-conducting material, preferably strawboard. The metallic sheets are coated with shellac on the inside.

sheet is coated on both sides and presents, therefore, a shellac surface to the contiguous surface of the metallic sheets.

Onthe table 3 is a sheet-metal covering 4,

Fig. 3 is a section .Fig. 4 1s a section The strawboard When therefore gas is admitted to these pipes and lighted, little jets of flame will be projected through the perforations 11, and these jets will meet at a point about midway between the pairs of pipes and substantially opposite the surface of the table 3.

Near the standards 5 we provide brackets 12,wherein pressure-rolls 13 and 1 1 are mounted. The roll 13 is fiXed'in its bearings, while the roll 14: is vertically movable, being normally held away from the surface of the roll 13 by coil-springs 15. Set-screws 16 are provided in the brackets 12 and arranged 'to engage the bearings of the roll 1 1 and press it toward the roll 13 against the tension of the springs 15. On the discharge side of the pressure-rolls isa table 17, whereon a closed stationary water-tank 18 is mounted, having a flat top and a flexible connection 19 with a similar movable tank 20. This movable tank is provided with an inlet-pipe 21, through which cold water is conducted into the tank 20 and flowing fro-m thence through the pipe 19 to the tank 18 is discharged through'a pipe 22. There is therefore a continuous stream of cold water 'flowingthrough the tanks and keeping their contacting surfaces cool at all times. The tank 20 normally rests upon the top of the tank 18, and to lift the tank 20 when it is desired to insert a section of the vault-lining beneath it we provide links 23, pivotally supported on cross-bars 24, secured to standards 25, connected with said movable tank by turnbuckles 26,- by means of which said stationary tank can be adjusted vertically.

To swing the said movable tank on its pivots and lift it away from the top of the stationary tank, we provide .a bail 27, pivoted on said movable tank and connected to a rope 28, that passes over pulley-blocks 29 to a suitable handle 30, that depends near the table 3 within convenient reach of the operator.

Any suitable means may be provided for operating the pressure-rolls; but we prefer to provide a driven shaft 31, having a pulley 32 and a worm 33, adapted to engage a gear 34:, that is mounted on a shaft 35 and has a pinion 36 in position to engage a gear 37 on the shaft of the lower pressure-roll. An idle pinion 38 engages the pinion 36 of a gear 39 on the shaft of the upper pressure-roll.

The operation of the machine is as follows: The sheet-metal vault-sections having previously been coated on one side with shellac are placed upon the table 3, with a sheet of insulating material that' has been dipped in shellac between them. The sheets having been trimmed to the proper dimensions are fed forward by the operator between the pairs of gas-pipes and through the tiny projecting gasflames. As the sheets are slowly fed forward through the gas-jets the shellac will be softened, and as the sheets enter between thepressure-rolls they will be firmly pressed together, the softened shellac causing them to adhere to each other and form, as it were, one homogeneous sheet. After leaving the pressurerolls the sheet will pass upon the flat'surface of the stationary tank, the movable tank having been raised for that purpose, and the sheet having reached the desired position the operator will allow the movable tank to drop down to its normal position and flatten out the sheet and quickly cool its surface. The metallic sheets will be insulated from each other and will be firmly attached to the intermediate insulating-sheet by the coatings of shellac thereon. between the tanks it is ready to be placed in its proper position in the vault-lining.

We claim as our in'vention 1. The combination, with a feed-table, of means for heating the ,upper and lower surfaces of sheet-metal sections thereon, pressurerolls provided near said heating means and a flattening and cooling device whereto said sections are delivered from said rolls.

2. The combination, with a feed-table, of gas-pipes arranged in pairs near the same, some of said pipes being above the level of said table and others below, and all of them having holes or perforations in their contiguous surfaces, pressure-rolls provided near said pipes and a cooling device arranged on the discharge side of said pressure-rolls.

3. The combination, with a feed-table, of means provided near the discharge side of said table and arranged to heat the surfaces of metal sheets fed forward from said table,

As soon as the section is removed from ,ses

pressure-rolls whereto the sheets are delivered after leaving said heating means, and a cooling device arranged on the discharge side of said pressure-rolls.

4.. The combination, with a feed-table, of gas-pipes provided near the discharge side of the same and having a series 'of perforations, said pipes being arranged above and below the level of said table to direct jets of flame upon the upper and under surfaces of material fed forward from said table, and pressure-rolls provided near said pipes.

5. The combination, with heating means, of pressure-rolls provided near the same, a stationary water-tank having a flat top and a movable water tank having a flat bottom adapted to rest upon said stationary tank.

6. The combination, with a feed-table, of gas-pipes having a series of perforations and arranged near the discharge side of said feedtable, and above and below the level of the same, pressure-rolls provided near said gaspipes, a fiat-topped stationary tank arranged near the-discharge side of said rolls, and a flat-bottomed movable tank pivotal] y supported above said stationary tank and normally resting thereon, and means within control of the operator for lifting said movable tank.

7. A machine of the class described comprising a table adapted to receive sheets placed one above another thereon and having their contiguous surfaces coated with an adhesive agent with a non-conductingmaterial between them, means for heating the surfaces of said sheets to soften the said adhesive agent, means for applying pressure to said sheets while said adhesive agent is in a plastic condition, and a cooling device.

8. The combination, with a feed table, adapted to receive metal sheets placed one above another, and having their contiguous surfaces coated with an adhesive agent, with a non conducting material between them, means for heating the surfaces of said sections to soften the said adhesive agent, means for applying pressure to said sheets, and means for flattening the sheets after leaving said pressing means,substantially as described.

9. The combination, with a feed-table, of means for heating sheet-metal sections placed one above another thereon with a non-conducting material between them, the contiguous surfaces of said sheets being coated with an adhesive agent, and means for applying pressure to said sheets after leaving said heating means.

10. The combination, with means for heating the exposed surfaces of conducting-sheets placed one upon another with a sheet of noncondueting material having its surfaces coated with an adhesive agent between them, of means for applying.pressure to said sheets while said adhesive agent is in a plastic condition.

11. The combination, with means for heat- In witness whereof we have hereunto set ing metallic sheets placed one upon another our hands this 27thday of October, 1903. with an adhesive agent and a non-conducting FREEMAN C. ROBINSON. material between them, of means for apply- JOHN F. JACOBY.

5 ing pressure to said sheets While said adhesive In presence of agent is in a plastic condition, substantially RICHARD PAUL,

as described. M. HAGERTY. 

